Movie projector

A movie projector is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras. Modern movie projectors are specially built video projectors. (see also digital cinema)

35 mm movie projector in operation
Bill Hammack explains how a film projector works.

Many projectors are specific to a particular film gauge.


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